Salt Lake County, UT Sign Regulations: Freeway-Facing Signs (2026)

185, which applies only in the unincorporated county and its townships (Magna, Kearns, White City, Copperton, Emigration Canyon and similar areas), not inside Salt Lake City, West Jordan, Sandy, Murray or the valley's other incorporated cities, each of which sets its own billboard rules. Subsection E fixes two height ceilings that hinge on zone and orientation. In the C-1 zone, an off-premises sign tops out at 35 feet. In the C-2, C-3, M-1 and M-2 zones the base limit is 45 feet measured above the grade level of the road, but a sign "oriented for freeway viewing only" and sited within 300 feet of the nearest freeway lane gets a separate, more generous formula: 25 feet above freeway grade level, or 50 feet overall, whichever produces the taller sign.

That bonus exists because freeway grade often sits below the surrounding road grade in the valley, so measuring from the freeway itself, rather than the arterial street, lets a sign clear the elevation gap and still be visible to freeway traffic. F). 94.